Custom stainless steel water tanks
SYSTEM-TAILORED TANKS FOR OEM INTEGRATION AND PRODUCT DEVELOPMENT
We design and manufacture custom stainless steel water tanks, including buffer tanks, indirect water heaters and chilled water tanks, for OEM integration and scalable product development. From application-specific projects to dedicated product ranges, ACT supports reliable industrial production.
From geometry and heat exchange performance to connections and insulation
Every tank is engineered for optimal integration into HVAC, heat pump and hot water systems.
Our OEM tank manufacturing approach allows you to scale from prototype to high-volume production without redesign.
Our stainless steel tanks are used in demanding applications where durability, corrosion resistance and consistent performance are critical.
All parameters are fully customizable to ensure optimal performance in your specific application
Our approach to OEM tank manufacturing provides full flexibility without compromising production efficiency, repeatability or quality.
The same configurable production platform
supports both project-specific OEM requirements and scalable product ranges for distribution partners.
For distributors and wholesalers
ACT supports partners who want to expand their offer with dedicated stainless steel tank ranges.
Using the same manufacturing platform, we can help develop dedicated product families aligned with your market, portfolio strategy and long-term supply needs.
→ Dedicated product families
→ Own-brand / private-label potential
→ Scalable production volumes
→ Long-term product continuity
Custom tank dimensions for every application
Our production system supports a wide range of stainless steel buffer tanks and indirect water heaters — enabling precise adaptation to system requirements and available installation space.
Tank capacity range
25–1800 l
Application-specific heat exchanger
Coil shapes
Cylindrical, conical or hourglass
Coil diameter range
16–42 mm
Adjustable coil spacing
Optimized for performance and efficiency
All nozzles are positioned according to your system layout — ensuring optimal flow, easy installation and seamless integration into OEM products. Connections can be placed on the shell, top or bottom heads, depending on design requirements.
This allows precise alignment with hydraulic schematics and simplifies system assembly and servicing.
High-performance insulation for energy efficiency
We apply PUR foam insulation to ensure low heat loss and compliance with energy efficiency requirements for hot water storage tanks and HVAC systems. Encased in a durable outer jacket for long-term performance and clean finish. Optimized insulation improves thermal efficiency, reduces energy losses and supports compliance with modern system standards.
PUR foam thicknesses
50/75/100 mm
Custom stainless steel tanks for HVAC, heating and energy systems
ACT designs and manufactures stainless steel water tanks for a wide range of applications, including HVAC systems, heat pumps and domestic hot water installations.
Our portfolio includes stainless steel buffer tanks, indirect water heaters and chilled water tanks — all developed in the OEM model and tailored to your system requirements.
We also deliver custom stainless steel pressure tanks designed for specific performance, durability and integration needs. Each tank is engineered individually to ensure optimal thermal performance, system compatibility and long-term reliability.
Types of stainless steel tanks
we manufacture
→ Stainless steel buffer tanks
→ Indirect water heaters
→ Chilled water tanks
→ Custom stainless steel pressure tanks
→ Tanks for heat pump systems
→ Tanks for HVAC systems
→ Tanks for domestic hot water systems
→ Solar collector tanks
Why COMPANIES
choose ACT
We help manufacturers and distribution partners simplify supply chains while maintaining control over quality, performance and scalability.
Short Lead Times
We align with your production schedule
Fast Quotation Turnaround
We respond quickly to engineering
and commercial requests
Technical Optimization
We improve tank design for performance,
cost and manufacturability
Scalable production
From pilot batches to high-volume series
